CN103854674B - 具有减小的磁头保持间距、头介质间距或头到软底层间距的记录介质 - Google Patents
具有减小的磁头保持间距、头介质间距或头到软底层间距的记录介质 Download PDFInfo
- Publication number
- CN103854674B CN103854674B CN201410080609.4A CN201410080609A CN103854674B CN 103854674 B CN103854674 B CN 103854674B CN 201410080609 A CN201410080609 A CN 201410080609A CN 103854674 B CN103854674 B CN 103854674B
- Authority
- CN
- China
- Prior art keywords
- magnetic
- stratum granulosum
- dust
- magnetic recording
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 209
- 230000009467 reduction Effects 0.000 title abstract description 12
- 239000010410 layer Substances 0.000 claims abstract description 167
- 239000011229 interlayer Substances 0.000 claims abstract description 85
- 238000000576 coating method Methods 0.000 claims abstract description 81
- 239000011248 coating agent Substances 0.000 claims abstract description 80
- 239000000696 magnetic material Substances 0.000 claims abstract description 18
- 239000000428 dust Substances 0.000 claims description 80
- 230000005408 paramagnetism Effects 0.000 claims description 80
- 239000013078 crystal Substances 0.000 claims description 53
- 210000000498 stratum granulosum Anatomy 0.000 claims description 50
- 230000005307 ferromagnetism Effects 0.000 claims description 43
- 230000005294 ferromagnetic effect Effects 0.000 claims description 42
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 29
- 229910052799 carbon Inorganic materials 0.000 claims description 26
- 230000005415 magnetization Effects 0.000 claims description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 229910052759 nickel Inorganic materials 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 229910017052 cobalt Inorganic materials 0.000 claims description 6
- 239000010941 cobalt Substances 0.000 claims description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 6
- 229910017112 Fe—C Inorganic materials 0.000 claims description 5
- 238000000926 separation method Methods 0.000 abstract description 25
- 238000000034 method Methods 0.000 abstract description 18
- 238000012423 maintenance Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 34
- 229910045601 alloy Inorganic materials 0.000 description 17
- 239000000956 alloy Substances 0.000 description 17
- 230000035699 permeability Effects 0.000 description 17
- 230000015572 biosynthetic process Effects 0.000 description 13
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 13
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 230000008878 coupling Effects 0.000 description 12
- 238000010168 coupling process Methods 0.000 description 12
- 238000005859 coupling reaction Methods 0.000 description 12
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 12
- 238000010276 construction Methods 0.000 description 10
- 239000010948 rhodium Substances 0.000 description 8
- 238000009826 distribution Methods 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 229910052697 platinum Inorganic materials 0.000 description 7
- 230000010287 polarization Effects 0.000 description 7
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 6
- 229910052786 argon Inorganic materials 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000002131 composite material Substances 0.000 description 6
- 239000000314 lubricant Substances 0.000 description 6
- 230000005389 magnetism Effects 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052763 palladium Inorganic materials 0.000 description 6
- 239000002585 base Substances 0.000 description 5
- 229910052703 rhodium Inorganic materials 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 229910018106 Ni—C Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 229910052715 tantalum Inorganic materials 0.000 description 4
- 229910019222 CoCrPt Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 229910000684 Cobalt-chrome Inorganic materials 0.000 description 2
- 229910002546 FeCo Inorganic materials 0.000 description 2
- 206010038743 Restlessness Diseases 0.000 description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 2
- 229910010169 TiCr Inorganic materials 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 230000005290 antiferromagnetic effect Effects 0.000 description 2
- 239000010952 cobalt-chrome Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000002178 crystalline material Substances 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 239000002159 nanocrystal Substances 0.000 description 2
- 229910000889 permalloy Inorganic materials 0.000 description 2
- -1 pottery Substances 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- 229910020598 Co Fe Inorganic materials 0.000 description 1
- 229910002519 Co-Fe Inorganic materials 0.000 description 1
- 229910003321 CoFe Inorganic materials 0.000 description 1
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- GANNOFFDYMSBSZ-UHFFFAOYSA-N [AlH3].[Mg] Chemical compound [AlH3].[Mg] GANNOFFDYMSBSZ-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000005381 magnetic domain Effects 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002907 paramagnetic material Substances 0.000 description 1
- 239000010702 perfluoropolyether Substances 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000005546 reactive sputtering Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004335 scaling law Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 238000005477 sputtering target Methods 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/72—Protective coatings, e.g. anti-static or antifriction
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
- G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
- G11B5/672—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers having different compositions in a plurality of magnetic layers, e.g. layer compositions having differing elemental components or differing proportions of elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/11—Magnetic recording head
- Y10T428/1164—Magnetic recording head with protective film
Landscapes
- Magnetic Record Carriers (AREA)
- Thin Magnetic Films (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/324,629 | 2008-11-26 | ||
| US12/324,629 US8114470B2 (en) | 2008-11-26 | 2008-11-26 | Reduced spacing recording apparatus |
| CN200910225825.2A CN101740043B (zh) | 2008-11-26 | 2009-11-24 | 具有减小的磁头保持间距、头介质间距或头到软底层间距的记录介质 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910225825.2A Division CN101740043B (zh) | 2008-11-26 | 2009-11-24 | 具有减小的磁头保持间距、头介质间距或头到软底层间距的记录介质 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103854674A CN103854674A (zh) | 2014-06-11 |
| CN103854674B true CN103854674B (zh) | 2016-02-24 |
Family
ID=42196581
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410080609.4A Expired - Fee Related CN103854674B (zh) | 2008-11-26 | 2009-11-24 | 具有减小的磁头保持间距、头介质间距或头到软底层间距的记录介质 |
| CN200910225825.2A Expired - Fee Related CN101740043B (zh) | 2008-11-26 | 2009-11-24 | 具有减小的磁头保持间距、头介质间距或头到软底层间距的记录介质 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910225825.2A Expired - Fee Related CN101740043B (zh) | 2008-11-26 | 2009-11-24 | 具有减小的磁头保持间距、头介质间距或头到软底层间距的记录介质 |
Country Status (3)
| Country | Link |
|---|---|
| US (3) | US8114470B2 (enrdf_load_stackoverflow) |
| JP (2) | JP5579419B2 (enrdf_load_stackoverflow) |
| CN (2) | CN103854674B (enrdf_load_stackoverflow) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9412404B2 (en) * | 2009-12-15 | 2016-08-09 | HGST Netherlands B.V. | Onset layer for perpendicular magnetic recording media |
| JP5685983B2 (ja) * | 2011-02-23 | 2015-03-18 | 富士電機株式会社 | 磁気記録媒体 |
| US8742518B2 (en) | 2011-03-31 | 2014-06-03 | Seagate Technology Llc | Magnetic tunnel junction with free layer having exchange coupled magnetic elements |
| US8481181B2 (en) * | 2011-03-31 | 2013-07-09 | Seagate Technology Llc | Exchange coupled magnetic elements |
| US8824100B2 (en) | 2011-05-20 | 2014-09-02 | Seagate Technology Llc | Overcoats that include magnetic materials |
| US20130052485A1 (en) * | 2011-08-25 | 2013-02-28 | Seagate Technology Llc | Recording stack with a dual continuous layer |
| US20140093746A1 (en) * | 2012-09-30 | 2014-04-03 | Seagate Technology Llc | Magnetic seed layer |
| US9123366B2 (en) | 2013-06-27 | 2015-09-01 | Seagate Technology Llc | Disc drive with magnetic self-assembled monolayer |
| US9324353B2 (en) | 2013-11-19 | 2016-04-26 | HGST Netherlands B.V. | Dual segregant heat assisted magnetic recording (HAMR) media |
| US9564164B2 (en) | 2013-12-20 | 2017-02-07 | Seagate Technology Llc | Exchange decoupled data storage medium |
| US9443545B2 (en) | 2013-12-24 | 2016-09-13 | HGST Netherlands B.V. | Thermally stable Au alloys as a heat diffusion and plasmonic underlayer for heat-assisted magnetic recording (HAMR) media |
| US9437233B1 (en) * | 2015-10-07 | 2016-09-06 | Seagate Technology Llc | Self-assembled monolayer to adjust fly height |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1534611A (zh) * | 2003-02-26 | 2004-10-06 | ƽ | 带有写入辅助层的磁记录介质 |
Family Cites Families (36)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4814241B1 (enrdf_load_stackoverflow) * | 1969-08-06 | 1973-05-04 | ||
| JPS6199921A (ja) * | 1984-10-19 | 1986-05-19 | Matsushita Electric Ind Co Ltd | 磁気記録媒体 |
| US5236791A (en) * | 1988-08-31 | 1993-08-17 | Hitachi, Ltd. | Magnetic recording medium and magnetic storage |
| EP0643385A3 (en) * | 1993-09-12 | 1996-01-17 | Fujitsu Ltd | Magnetic recording medium, magnetic head and magnetic recording device. |
| JPH08129748A (ja) * | 1994-10-28 | 1996-05-21 | Sony Corp | 磁気記録媒体 |
| JPH08203069A (ja) * | 1995-01-31 | 1996-08-09 | Nec Corp | 磁気記憶媒体 |
| US6403203B2 (en) * | 1997-05-29 | 2002-06-11 | Hitachi, Ltd. | Magnetic recording medium and magnetic recording apparatus using the same |
| JP3731640B2 (ja) * | 1999-11-26 | 2006-01-05 | 株式会社日立グローバルストレージテクノロジーズ | 垂直磁気記録媒体及び磁気記憶装置 |
| US20060029806A1 (en) * | 2000-05-10 | 2006-02-09 | Fujitsu Limited. | Carbonaceous protective layer, magnetic recording medium, production method thereof, and magnetic disk apparatus |
| US6914749B2 (en) | 2000-07-25 | 2005-07-05 | Seagate Technology Llc | Magnetic anisotropy of soft-underlayer induced by magnetron field |
| US6818330B2 (en) * | 2000-08-25 | 2004-11-16 | Seagate Technology Llc | Perpendicular recording medium with antiferromagnetic exchange coupling in soft magnetic underlayers |
| US6777112B1 (en) | 2000-10-10 | 2004-08-17 | Seagate Technology Llc | Stabilized recording media including coupled discontinuous and continuous magnetic layers |
| US6955857B2 (en) * | 2000-12-29 | 2005-10-18 | Seagate Technology Llc | Exchange decoupled cobalt/noble metal perpendicular recording media |
| US7060376B1 (en) | 2001-12-06 | 2006-06-13 | Seagate Technology Llc | Amorphous soft underlayers for perpendicular recording media |
| US7128987B2 (en) * | 2002-06-21 | 2006-10-31 | Seagate Technology Llc | Multilayer magnetic recording media including composite layer with discontinuous magnetic phase and continuous non-magnetic phase |
| JP4223240B2 (ja) * | 2002-07-16 | 2009-02-12 | 昭和電工株式会社 | 磁気記録媒体、その製造方法および磁気記録再生装置 |
| JP2004118894A (ja) * | 2002-09-24 | 2004-04-15 | Victor Co Of Japan Ltd | ディスク状磁気記録媒体 |
| JP2004303377A (ja) * | 2003-03-31 | 2004-10-28 | Toshiba Corp | 垂直磁気記録媒体及び磁気記録再生装置 |
| JP2004310944A (ja) | 2003-04-09 | 2004-11-04 | Fujitsu Ltd | 垂直磁気記録媒体および磁気記憶装置 |
| JP2005032352A (ja) * | 2003-07-14 | 2005-02-03 | Toshiba Corp | 粒子分散型膜を下地に用いた磁気記録媒体、その製造方法、および磁気記録再生装置 |
| JP4525249B2 (ja) * | 2003-09-26 | 2010-08-18 | Ｔｄｋ株式会社 | 磁気記録媒体及び磁気記録装置 |
| JPWO2005034097A1 (ja) * | 2003-09-30 | 2006-12-14 | 富士通株式会社 | 垂直磁気記録媒体、その製造方法、および磁気記憶装置 |
| US7201977B2 (en) | 2004-03-23 | 2007-04-10 | Seagate Technology Llc | Anti-ferromagnetically coupled granular-continuous magnetic recording media |
| JP2005327368A (ja) * | 2004-05-14 | 2005-11-24 | Fujitsu Ltd | 磁気記録装置用保護層、磁気ヘッドおよび磁気記録装置 |
| US20060228586A1 (en) * | 2005-04-06 | 2006-10-12 | Seagate Technology Llc | Ferromagnetically coupled magnetic recording media |
| US20060269797A1 (en) * | 2005-05-26 | 2006-11-30 | Seagate Technology Llc | Perpendicular magnetic recording media including a uniform exchange enhancement layer |
| US7556870B2 (en) * | 2005-08-15 | 2009-07-07 | Hitachi Global Storage Technologies Netherlands B.V. | Antiferromagnetically coupled media for magnetic recording with weak coupling layer |
| JP2007272990A (ja) * | 2006-03-31 | 2007-10-18 | Fujitsu Ltd | 磁気記録媒体及びその製造方法 |
| US20070287031A1 (en) | 2006-06-08 | 2007-12-13 | Seagate Technology Llc | Thin sul perpendicular magnetic recording media and recording systems comprising same |
| JP4761224B2 (ja) * | 2006-10-12 | 2011-08-31 | 富士電機デバイステクノロジー株式会社 | 垂直磁気記録媒体 |
| US7862913B2 (en) | 2006-10-23 | 2011-01-04 | Hitachi Global Storage Technologies Netherlands B.V. | Oxide magnetic recording layers for perpendicular recording media |
| JP2008129748A (ja) | 2006-11-20 | 2008-06-05 | Dainippon Printing Co Ltd | 非接触ｉｃタグと非接触ｉｃタグ連接体 |
| JP2008203069A (ja) | 2007-02-20 | 2008-09-04 | Shiseido Co Ltd | 板状粉体の外観評価方法 |
| JPWO2008105095A1 (ja) * | 2007-02-28 | 2010-06-03 | 昭和電工株式会社 | 垂直磁気記録媒体および磁気記録装置 |
| JP2008282512A (ja) * | 2007-05-14 | 2008-11-20 | Toshiba Corp | 磁気記録媒体及び磁気記録再生装置 |
| US8824100B2 (en) * | 2011-05-20 | 2014-09-02 | Seagate Technology Llc | Overcoats that include magnetic materials |
-
2008
- 2008-11-26 US US12/324,629 patent/US8114470B2/en active Active
-
2009
- 2009-11-16 JP JP2009260566A patent/JP5579419B2/ja not_active Expired - Fee Related
- 2009-11-24 CN CN201410080609.4A patent/CN103854674B/zh not_active Expired - Fee Related
- 2009-11-24 CN CN200910225825.2A patent/CN101740043B/zh not_active Expired - Fee Related
-
2012
- 2012-02-13 US US13/372,398 patent/US8715840B2/en active Active
-
2014
- 2014-01-22 US US14/161,607 patent/US9299379B2/en active Active
- 2014-02-05 JP JP2014020332A patent/JP5858252B2/ja not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1534611A (zh) * | 2003-02-26 | 2004-10-06 | ƽ | 带有写入辅助层的磁记录介质 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010129167A (ja) | 2010-06-10 |
| US9299379B2 (en) | 2016-03-29 |
| CN101740043A (zh) | 2010-06-16 |
| US8715840B2 (en) | 2014-05-06 |
| US8114470B2 (en) | 2012-02-14 |
| JP5579419B2 (ja) | 2014-08-27 |
| US20140212690A1 (en) | 2014-07-31 |
| JP2014078315A (ja) | 2014-05-01 |
| US20100129685A1 (en) | 2010-05-27 |
| US20120141834A1 (en) | 2012-06-07 |
| CN101740043B (zh) | 2015-07-22 |
| CN103854674A (zh) | 2014-06-11 |
| JP5858252B2 (ja) | 2016-02-10 |
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